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LM3551 データシート(PDF) 3 Page - Texas Instruments

部品番号 LM3551
部品情報  1A White LED Driver with Flash Timeout Protection
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
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LM3551 データシート(HTML) 3 Page - Texas Instruments

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LM3551, LM3552
www.ti.com
SNVS371D – AUGUST 2005 – REVISED MAY 2013
Absolute Maximum Ratings
(1) (2) (3)
VIN pin: Voltage to GND
7.5V
SW pin: Voltage to GND
21V
FB pin: Voltage to GND
7V
VC pin: Voltage to GND
1.26V ± 0.3V
SD,T/F pins: Voltage to GND
7.5V
FET-T, FET-F: Voltage to GND
6V
Continuous Power Dissipation(4)
Internally Limited
Junction Temperature (TJ-MAX )
150°C
Storage Temperature Range
-65°C to +150
ESD Rating(5)
Human Body Model
2.0kV
(1)
Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under
which operation of the device is specified. Operating Ratings do not imply performance limits. For performance limits and associated test
conditions, see the Electrical Characteristics tables.
(2)
All voltages are with respect to the potential at the GND pin.
(3)
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(4)
Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at TJ=140ºC (typ.) and
disengages at TJ=120ºC (typ.).
(5)
The human body model is a 100pF capacitor discharged through a 1.5k
Ω resistor into each pin. (MIL-STD-883 3015.7)
Operating Ratings
(1) (2)
Input Voltage Range
2.7V to 5.5V
SW Voltage Max.(3)
20V
Junction Temperature (TJ) Range
-40°C to +110°C
Ambient Temperature (TA) Range
(4)
-40°C to +85°C
(1)
Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under
which operation of the device is specified. Operating Ratings do not imply performance limits. For performance limits and associated test
conditions, see the Electrical Characteristics tables.
(2)
All voltages are with respect to the potential at the GND pin.
(3)
Maximum recommended SW pin voltage when the OVP pin is grounded.
(4)
In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may
have to be derated. Maximum ambient temperature (TA-MAX) is dependent on the maximum operating junction temperature (TJ-MAX-OP =
110ºC), the maximum power dissipation of the device in the application (PD-MAX), and the junction-to-ambient thermal resistance of the
part/package in the application (
θJA), as given by the following equation: TA-MAX = TJ-MAX-OP – (θJA × PD-MAX).
Thermal Properties
Junction-to-Ambient Thermal Resistance (
θJA), NHL0014B Package
(1)
37.3°C/W
(1)
Junction-to-ambient thermal resistance is highly application and board-layout dependent. In applications where high maximum power
dissipation exists, special care must be paid to thermal dissipation issues in board design.
Copyright © 2005–2013, Texas Instruments Incorporated
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